14 MEETINGS. 



occur, but veins of coarser syenitic or granitic rock, were met 

 with at Rozel Road, St. Jacques and Gibauderie. No clear 

 indications of gneiss have been noticed in any of the exca- 

 vations, extending southward as far as the C routes end of 

 Belmont Road. At Camp Pendart the rock consisting 

 of decomposed diorite intersected by numerous felsite and 

 amorphous diorite veins, is curved into pseudo-strata following 

 the slope of the hill. These, possibly, are connected with the 

 sandy and clayey deposits said to exist in the neighbourhood 

 of the Roussaillerie. 



ALDERNEY. 



Two visits to this Island were made in the course of the 

 summer. They were spent in measuring the elevation and 

 fixing the position of some old beaches in the eastern part of 

 the Island. One in the diorite quarry, west of Corbelets 

 Bay, was found to be from 77 to 80 feet above mean sea level 

 (an elevation corresponding to that of the highest beaches 

 found in Guernsey). It was overlaid by a sandy deposit. 

 To the east of Corbelets Bay, a beach in a sandstone quarry 

 was found to be 58 feet above mean sea level, and still further 

 east, a third beach was found in a cutting having an elevation 

 of from 45 to 50 feet. In the first of these the pebbles were 

 mixed with angular rubble, indicating perhaps that they had 

 been brought down from a higher level ; the others are good 

 typical examples of beaches in situ. In the low cliffs forming 

 the eastern extremity of the island, very good sections of old 

 beaches, at an elevation of from 23 to 26 feet above mean sea 

 level, occur. Beaches of a similar elevation occur at many 

 other parts of the coast. 



The southern quarry, north of Essex Castle, noted as 

 containing pebbles embedded in the sandstone, was also visited. 

 All the pebbles noticed were of quartz felsite, the structure 

 of some being porphyritic and of others banded. They 

 resembled the rhyolites of the north of Jersey more than they 

 did any local rock so far known to us. 



C. G. De La Mare, Sec. Geol. Sect. 



REPORT OF THE ENTOMOLOGICAL SECTION. 



In presenting the Entomological Report for 1900, I 

 am pleased to say that it has been a very successful season, 

 the fine weather enjoyed during the summer being very 

 favourable to the development and migration of Insects. 



